Radiator fan relay
#1
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Radiator fan relay
Hi everyone, I need help to figure out how to take the fan relay. I tried to wiggle it and pull out but doesn’t budge.
My fan turn on as soon as I turn the key, the car doesn’t over heat, and the fan off when I turn the key off.
There are 3 relay, fan no1, no 2 and no 3. What are the 3 relay for? Is only has 2 fan.
I just guess that no1 is low speed and no2 & 3 is high speed.
#6
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The problem is when the key off, the fan stop. As soon I turn the key on the fan start running.
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#8
Lexus Test Driver
iTrader: (2)
Is this a switch or a thermistor? I'm guessing it's a thermistor which changes resistance with temperature. With an ohm meter, measure across its terminals when cold. Warm the engine and measure across the terminals again. The resistance should decrease.
Cold ~ 2500 ohms
Warm ~ 350 ohms ?
Something like that. If it doesn't change or is leaking, replace it.
Also, do your can tests with the Heating and A/C turned off. When on, the A/C can be called upon and this by itself can trigger the coolant fans to run.
Cold ~ 2500 ohms
Warm ~ 350 ohms ?
Something like that. If it doesn't change or is leaking, replace it.
Also, do your can tests with the Heating and A/C turned off. When on, the A/C can be called upon and this by itself can trigger the coolant fans to run.
#9
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#10
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now I have to check the temp sensor on the radiator.
What else do I need to check.
#12
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#13
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#14
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with electrical part you can get stuck with it if it’s not wright. Any other sensor related to the fan that I should check?
Thank you very much for your help and suggestions .
#15
According to rock auto, they have the radiator fan switch around $13 to $17 plus shipping:
http://www.rockauto.com/en/catalog/l...an+switch,4312
Yes when you remove that sensor, coolant will be coming out so have a large bucket ready unless you are super fast at swamping this sensor out.
http://www.rockauto.com/en/catalog/l...an+switch,4312
Yes when you remove that sensor, coolant will be coming out so have a large bucket ready unless you are super fast at swamping this sensor out.